When you crunch the numbers on Canada's various provincial Blue Box systems, one fact stands out more than any other. The Blue Box is basically a Paper Box, part of a larger feeder supply network for Canadian and other paper recycling mills.

Paper's overwhelming dominance is more obvious, of course, in the many "deposit" provinces where beverage containers are returned outside of the Blue Box system. But even in "non-deposit" Ontario, paper is king. Over 75% of all the material collected in Ontario's Blue Box is paper of some kind, whether printed paper like newspapers or packaging boxes and cartons. This has not changed over the last 13 years of data compiled by the province's Blue Box industry-funding organisation, Stewardship Ontario.

A huge chunk of that recovered paper goes to Ontario recycling mills to be turned into new newspapers, new corrugated boxes, or new boxboard cartons. A local and active circular economy. The mills, and the converters who turn that recycled fibre into new paper products, provide employment to many local communities and pay taxes to municipal governments.

Paper categories also have the highest individual recovery rates of all materials in Ontario's Blue Box. Used corrugated boxes top the bill at an amazing 98% recovery rate followed by old telephone books (96%) and old newspapers (92%). The paper or fibre stream overall has a very respectable 74% recovery rate. The recovery rate for the container stream (plastic, glass and metal packaging), on the other hand, is only 46%, dragged down by plastics' lowly 32 percent.